little fix

Author: ArnoChenFx

NodeGraphQt/base/graph.py

@@ -1453,11 +1453,11 @@ def save_dialog(self, current_dir=None, ext=None):
         """
         return self._viewer.save_dialog(current_dir, ext)
 
-    def use_opengl(self):
+    def use_OpenGL(self):
         """
         Use OpenGL to draw the graph.
         """
-        self._viewer.use_opengl()
+        self._viewer.use_OpenGL()
 
     def graph_rect(self):
         """

NodeGraphQt/base/utils.py

@@ -678,8 +678,6 @@ def auto_layout_up(start_nodes=[], all_nodes=[]):
         start_nodes = [n for n in all_nodes if not _has_output_node(n)]
     if not start_nodes:
         return []
-    if not [n for n in start_nodes if _has_input_node(n)]:
-        return start_nodes
 
     nodes_rank = _compute_rank_up(start_nodes)
 
@@ -723,8 +721,6 @@ def auto_layout_down(start_nodes=[], all_nodes=[]):
         start_nodes = [n for n in all_nodes if not _has_input_node(n)]
     if not start_nodes:
         return []
-    if not [n for n in start_nodes if _has_output_node(n)]:
-        return start_nodes
 
     nodes_rank = _compute_rank_down(start_nodes)
 

NodeGraphQt/widgets/properties.py

@@ -596,6 +596,9 @@ def __init__(self, parent=None, dim=3):
         self._can_emit = True
         self.setLayout(hbox)
 
+    def set_data_type(self, dt):
+        [item.set_data_type(dt) for item in self._items]
+
     def _add_item(self, index, hbox):
         _ledit = _valueEdit()
         _ledit.index = index

NodeGraphQt/widgets/viewer.py

@@ -94,8 +94,6 @@ def __init__(self, parent=None):
         menu_bar.addMenu(self._ctx_node_menu)
         self._ctx_node_menu.setDisabled(True)
 
-        self._zoom_value = self.get_zoom()
-
         self.acyclic = True
         self.LMB_state = False
         self.RMB_state = False
@@ -400,7 +398,6 @@ def wheelEvent(self, event):
             delta = event.angleDelta().y()
             if delta == 0:
                 delta = event.angleDelta().x()
-        self._zoom_value += delta
         self._set_viewer_zoom(delta, pos=event.pos())
 
     def dropEvent(self, event):
@@ -919,10 +916,7 @@ def clear_key_state(self):
         self.SHIFT_state = False
         self.ALT_state = False
 
-    def get_real_zoom(self):
-        return self._zoom_value
-
-    def use_opengl(self):
+    def use_OpenGL(self):
         format = QtOpenGL.QGLFormat(QtOpenGL.QGL.SampleBuffers)
         format.setSamples(4)
         self.setViewport(QtOpenGL.QGLWidget(format))

example_auto_nodes.py

@@ -93,7 +93,7 @@ def cook_nodes(nodes):
 
     # create node graph.
     graph = NodeGraph()
-    graph.use_opengl()
+    graph.use_OpenGL()
 
     # set up default menu and commands.
     setup_context_menu(graph)